FXUS65 KSLC 292242
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
345 PM MST SUN NOV 29 2009
.SYNOPSIS...AN UPPER LOW OVER NORTHERN BAJA CALIFORNIA WILL CONTINUE
TO MOVE SOUTHEAST TODAY. HIGH PRESSURE WILL BUILD INTO THE AREA FROM
THE NORTHWEST TODAY AND PERSIST THROUGH EARLY NEXT WEEK.
&&
.DISCUSSION...HIGH PRESSURE CONTINUES TO BUILD INTO THE GREAT BASIN
THIS AFTERNOON WHILE AN UPPER LOW OVER NORTHERN MEXICO SLOWLY MOVES
EAST. THE LOW WILL BE TOO FAR SOUTH TO HAVE ANY MORE EFFECT ON OUR
CWA EXCEPT TO KEEP SOME LOCALLY GUSTY WINDS MAINLY ACROSS PORTIONS
OF SOUTHERN UTAH THROUGH TONIGHT. OTHERWISE...GENERALLY CLEAR SKIES
CAN BE EXPECTED THROUGH MONDAY AS A DRY AND STABLE AIRMASS HAS
SETTLED INTO THE AREA.
INVERSIONS WILL STRENGTHEN TOMORROW AS THE HIGH CONTINUES TO BUILD
INTO THE AREA...BUT AN UPPER TROUGH DROPPING INTO THE GREAT PLAINS
MIDWEEK SHOULD BRING A FEW DEGREES OF COOLING AT MIDLEVELS WHICH MAY
WEAKEN THE INVERSION A BIT.
SIGNIFICANT MODEL SPREAD REMAINS FOR NEXT WEEKEND. BOTH THE GFS AND
GEM CONTINUE TO SUGGEST A VERY COLD STORM SYSTEM DROPPING INTO THE
GREAT BASIN...ALTHOUGH THERE ARE SOME DIFFERENCES WITH TIMING AND
TRACK. THE EC HAS YET TO COME IN LINE WITH THIS THINKING...BUT THE
LATEST RUN IS BEGINNING TO SUGGEST THAT A WEEKEND STORM IS POSSIBLE.
HOWEVER...IT KEEPS THE STORM TRACK JUST TO THE NORTH OF OUR AREA.
FOR NOW...HAVE CONTINUED TO HEDGE MORE TOWARDS THE GFS/GEM SOLUTION
WITH COLDER TEMPERATURES AND POPS SLIGHTLY ABOVE CLIMO FOR THE
WEEKEND.
&&
.AVIATION...VFR CONDITIONS ARE EXPECTED TO CONTINUE AT THE KSLC
TERMINAL THROUGH THE TAF PERIOD. NORTHWEST WINDS ARE EXPECTED TO
SWITCH TO THE SOUTHEAST BETWEEN 0500 UTC AND 0700 UTC. THERE IS A
30 PERCENT CHANCE THAT THE SWITCH TO SOUTHEAST WINDS WILL BE DELAYED
UNTIL AFTER 0700 UTC.
&&
.SLC WATCHES/WARNINGS/ADVISORIES...
UT...NONE.
WY...NONE.
&&
$$
PUBLIC...CHENG
AVIATION...GRAHAM
FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
